Acid fast bacilli - Study guides, Class notes & Summaries

A urine specimen was submitted for isolation of cytomegalovirus. The urine was inoculated into human fibroblast tissue culture tubes. After 72 hours, no cytopathic effect was observed in the culture tubes. The most appropriate course of action is to: - incubate the culture tubes for 2 to 3 weeks longer At the present time Clostridium difficile toxin can be detected by: - EIA Infection of the urinary tract is most frequently associated with: - Escherichia coli Which of the two different ...

MLPAO Test Prep ~ Microbiology Questions and Answers 100% Pass Microbiology is the study of Microscopic organisms Four major groups of Microorganisms Bacteria, Viruses, Fungi, Parasites Viruses are non cellular Parasites Viruses are observed through Electron microscope Viruses contain a genomic core made up of either ____ or ____ (never both!) and a coat of ____ surrounding the core called an ___ DNA, RNA, protein, envelope Viruses are obligate intracellular_____ Parasites Prokaryotic bact...

Are Mycobacterium gram positive or negative? How would you describe their shape? Gram positive bacilli (rods) Mycobacterium cell wall has high lipid content containing what? Mycolic acids and lipoarabinomannan Why is Mycobacterium hard to stain, and what stain must be used? -The wax like surface is difficult to stain, and once stain gets in, it is hard to decolorize -Requires acid alcohol to decolorize -Must use acid fast stain

The nurse admits Raymond to a private room at the end of the hall. According to hospital protocol, the nurse puts on a mask before starting the admission process. Raymond tells the nurse that his significant other is downstairs and that he would like for him to stay in the room w/ him. How should the nurse respond? - He may stay, but he needs to wear a mask Raymond's significant other, Brandon, arrives. Raymond wants to know why a mask is necessary for people entering his room. What teachi...

WGU C453 Clinical Microbiology Exam Questions with 100% Correct Answers Bacteria -Answer-Single-celled organism that do not have a cell nucleus and the membrane-enclosed intracellular structures found in most other cells (Prokaryotic cell). Gram-positive Bacteria -Answer-Thick layer of peptidoglycan (20-80nm across). The peptidoglycan layer is closely attached to the outer surface of the cell membrane. Retains crystal violet stains. Lack an outer membrane and a periplasmic space. Gram-neg...

ASCP BOC EXAM Study Guide QUESTIONS & ANSWERS 2023/2024 When using an electronic cell counter, which of the following results can occur in the presence of a cold agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased MCV and increased MCHC d) decreased MCV and RBC - ANSWER-a) increased MCV and decreased RBC Cerebrospinal fluid for glucose assay should be: a) refrigerated b) analyzed immediately c) heated to 56 degree C d) stored at room temp after ...

RPN 100 Qs&As A+ Case Information CASE 1 Mrs. Jackson, 58 years old, has been admitted to a four-bed room on a medical unit with a diagnosis of pneumonia. QUESTIONS 1 to 5 refer to this case 1. The physician's orders for Mrs. Jackson include sputum specimen for C&S and acid-fast bacilli (AFB). What is the correct method for the client to collect the sputum specimen? 1. Rinse mouth with mouthwash and collect the specimen p.c. breakfast. 2. Collect the specimen in a sterile conta...

Name the Mycobacterium: Rapid growing gray-white smooth nonpigmented colonies Ciprofloxacin resistance Suceptible to Polymyxin B correct answersMycobacterium chelonae Name the Mycobacterium: Rapid colony growth Susceptible to ciprofloxacin Resistant to Polymyxin B Positive nitrate reduction and iron uptake. correct answersMycobacterium fortuitum Name the 2 Mycobacterium: Slow growing colonies Yellow pigmented colonies correct answersM. gordonae and M. scofulaceum Name the My...

What term describes the morphology of organisms that vary in shape and size? Pleomorphic Capsules are the basis of which test? Serotyping A mucoid colony on blood agar medium indicates that which of the following characteristics may be present? Organism has a capsule. What are dark staining granules called? Metachromatic Which of the following organisms are non-motile? Shigella and Klebsiella In the bacterial growth cycle, growth ceases because nutrients a...

Acid-Fast Bacillus (AFB) Staining (Ziehl-Neelsen) correct answer: Used for the diagnosis of tuberculosis, tuberculous infections and leprosy. Organisms will appear red against a blue background when stained by this method. Usually takes 2-3 weeks to culture the tubercle bacilli. Results of the AFB stain may indicate the need for the initiation of therapy. Airway Resistance (Raw) correct answer: Estimated for patients on mechanical ventilation by determining the difference between peak airwa...